It is incest!!!!
Unless there is a major, major plot twist after the last uploaded chapter then it's not incest.
They have the same mother right?
No.
Lol old now but for anyone who is confused i think the parents divorced mc stayed with dad and bro stayed with mom, mom then married love interest dad (the principal) and bro died don t know the parents relationship tho so don t know if they are still technically step sibs
I thought this was incest! But i'll read it anyway! XD